Concrete is composed of cement, aggregate (including crushed rock and sand) and water. In homes, it's frequently seen in the foundation, driveway, sidewalk, patio, and stone walls. Note that bricks use mortar in the joints, not concrete.

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Edge considerations on mosaic staircase

I'm renewing our old outdoor concrete staircase going to the garden. I've decided to install glass mosaic as surface finishing. I've got advice from the specialized shop regarding water-proofness of ...
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1answer
51 views

Should the cement floor adheres to the concrete slab?

If I want to use a cement floor (with broadcast color hardener) over a concrete slab (laid over compact soil), should it adheres to it, or be separated? The concrete slab is rough, the cement layer ...
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105 views

Did I properly grade the ground around my house? [closed]

I had some water issues in my basement recently. Taking a good look at all the possible causes I noticed the landscaping around the front my house was slopping in towards the house. So to fix this I ...
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42 views

How to caulk vertical seams of concrete step risers?

I am recaulking some concrete steps, and the concrete/masonry caulk I bought says it's self leveling and for horizontal surfaces only. Are there caulks that are meant for concrete but will adhere ...
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1answer
116 views

How do I repair this damage to my driveway?

After the brutal winter, my wife and I found several locations on our driveway where the concrete is crumbling. This is the worst of them: In the past, I have used self-leveling concrete caulk ...
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1answer
57 views

Preserving cracked concrete

I have a garage built with concrete blocks and the walls are surrounded on the outside by a layer of concrete rendering. The problem is that large cracks have built up in the rendering over time, ...
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1answer
29 views

Worth it to add footing insulation if there's already a thermal break?

I've been considering insulating the outside perimeter footings of my 1972 ranch house in northern New Mexico. The slab-on-grade it's built on (that constitutes the subfloor) reaches a temperature ...
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123 views

Cinder Blocks crumbling

As it is evident from the pictures, cinder blocks on the bottom of the wall are disintegrating. I have tried painting with special paint but it continues to happen. How do I replace them? Why is ...
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87 views

How to prevent outdoor wall touching concrete fom getting moisture issues?

In my house the drywall is contact with the concrete. This is putting lot of moisture in the drywall and eventually it will start to rot. What is the best solution in this case to isolate the wall ...
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369 views

How to fix leak in ABS pipe going into cement

I discovered a leak in the drain pipe from my kitchen sink (and dishwasher) as it joins with the main drain in my basement floor. The leak is at a Y junction - the bottom of the Y is in the slab, one ...
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3answers
330 views

Should I be able to just peel tile off the wall by hand if it is installed right?

We hired a contractor to remodel our master bathroom. For the tile installation in the shower, he started with a float-cement backing. To show quick progress, he rushed through this step and the final ...
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2answers
203 views

Rebar cattle guard

Looking for a cattle guard that can be made from available supplies at local home depot. Needs to be able to support 32,000 lbs to meet HS-20 aka cement truck. Schedule 40 re-bar has a tensile ...
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2answers
120 views

Can I tile over Linoleum felt paper on a concrete slab?

I have a contractor coming in to tile my home. My floor is a post tension concrete slab, home is only 4 yrs old. The contractor said they could just tile right over the linoleum, but after reading ...
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131 views

Should I drill through the concrete garage wall to install a generator inlet switch inside?

I recently purchased a generator in the aftermath of the ice storms in the Northeast. I'm quit handy with the electrical wiring in my house and have no issue installing the proper circuit for the ...
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1answer
84 views

How should the concrete anchoring some fenceposts relate to the driveway they're puncturing?

I'm about to have some 8" cores drilled through a concrete driveway in order to run a fence across it. I'll use 4x4 posts, probably cedar, sunk several feet deep and anchored in concrete. Should the ...
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53 views

Help translate terminology relating to concrete floor construction

I just bought a house which had an extension done 12 years ago. I am about to do some work in this area and want to understand what has been done before. Below is a screen shot of the bits of the ...
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2answers
246 views

How do I level a concrete basement floor with a 1" dip?

I want to level my concrete basement floor, but on one end it slants down over 1" (over a 3'x15' run). Can I fill this area before using self-leveling compound, to save money, or what else could I ...
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3answers
377 views

Renovating Crawlspace with Poured Concrete Floor

My newly-purchased 1950s home has a below-grade crawlspace with a poorly-poured concrete floor. Specifically, it is very coarse and looks like it was poured and spread with a garden rake. In some ...
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2answers
135 views

options for new floor over concrete slab

I am in the middle of a basement renovation, roughly 1000 sq feet. The existing floor is some sort of vinyl sheet material over concrete slab. There is an existing floor drain in the current washing ...
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1answer
248 views

Is there a maximum thickness for shower float cement?

We are currently redoing our shower and would like to use float-cement to carry the tile. The wall behind it is a bit crooked, so, to get it nice and level, the float-cement would have to be a bit ...
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1answer
70 views

Where to locate moisture barrier in engineered hardwood floor sandwich placed over insulation board?

I'm planning to install an engineered hardwood floor on a concrete slab that is very very cold. The climate is northern New Mexico. The slab perimeter is not insulated, and doing so is ...
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60 views

How can I fix an unlevel bathroom concrete floor?

In our very small bathroom (in a slab home) we have an uneven concrete floor. There is a ⅝" inch gap between the baseboard and vinyl that travels about 15½" along the baseboard. (The ...
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57 views

Slab foundation floor crack

I am purchasing a new construction home. The foundation, patio, & garage slabs were all poured at the same time, in mid-september. The home is not yet complete, but we have noticed a crack in the ...
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1answer
46 views

How to insulate slab that's been extended?

I bought a house built on a concrete slab on grade. It's an older house, so no part of the slab was insulated. At some point in the past, previous owners decided to pour concrete around the entire ...
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117 views

How to clean sand and brick dust off concrete paver blocks?

I have a floor of concrete paver blocks. There is a brown stain on them due to the presence of sand and bricks powder. I'm afraid of using more Hydrochloric acid because it didn't remove all the stain ...
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1answer
409 views

What should I use to fill drilled concrete holes that are not used anymore?

Just wanted to do some home repairs and found lots of old drilled holes. I've used putty to cover them up but it occurred to me that there would be air gaps for the holes as the putty cover over them ...
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1answer
76 views

Does Limecrete exist in North America?

I've been learning a little bit about limecrete And I thought it'd be fun to try a project with it (small one) but I can't seem to find it as a product in North America. Most (all?) references to ...
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2answers
158 views

Is this normal for the brick to extend past the concrete slab foundation?

I am in the process of buying a home and noticed that the brick extends past the concrete slab foundation. I checked different houses around the area and all were flush with the concrete slab. Is this ...
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2answers
113 views

How to level sloped concrete ceiling, and is it worth it?

I want to remove popcorn ceiling in a 7' by 14' room and turn it into a smooth ceiling. I have just built this room. The walls are not yet painted, so now is a good time to do the ceiling. I know how ...
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1answer
421 views

How to reinstall iron stair railing in concrete that rusted out at the base?

So one day some time ago our iron stair railing going from the sidewalk to the stoop rusted through at the base of the posts and fell right over. I had a welder friend cut off the rusted portion and ...
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1answer
352 views

How do I rebuild a large fence gate?

I have a concrete driveway that continues to the side of my house, with a double gate (a person gate, and a large vehicle gate). The gates are very old and made only with 2x4 frames and standard ...
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1answer
315 views

Can I fill sagging spots in my driveway with asphalt and hot tar?

We've had these sagging spots for about 10 years now. They're not getting any worse. Sure, we might get a new driveway in 10 years, but other than this, our driveway is in beautiful condition! They ...
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3answers
1k views

Should I use a 6 mil poly moisture barrier for engineered hardwood floor installed over concrete slab-on-grade?

I am planning to install an engineered hardwood floor over a slab-on-grade subfloor. The slab is bone dry but I understand it's wise to install a moisture barrier anyway. My plan right now is to ...
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1answer
363 views

How do I make this large mold for concrete countertop?

I've been wanting to make a concrete counter-top for a long time but there's one section that is giving me trouble. The mold would have to be bigger than would fit on a standard 4' x 8' sheet of ...
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1answer
106 views

Can you apply surface-bonding cement over stucco as an exterior finish?

Let's say you have a wood-framed wall with cement-based stucco cladding and it's in pretty good condition, with a few typical stucco cracks. If you wanted to seal the cracks, add another layer, and ...
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1answer
431 views

Can I put concrete over PVC pipe?

I have my laundry room in the backyard and there is an area that had a thin piece of concrete and below it there is soil. Beneath the soil there lies the drainage PVC 1 ½” pipe, gas line (not ...
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2answers
2k views

How to plug hole in foundation?

Here is the front of my house. As you can see it is a 2-story dwelling on the left with a garage on the right that is connected to the main house by a "sunroom" (porch/breezeway/whatever). The main ...
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2answers
113 views

Technique to level a patio for concrete and tiling

I currently have a large patio which has brick paving. unfortunately the paving has started to sink in spots and gathers rain water. I will be removing the brick and laying a slab of concrete, in ...
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3answers
1k views

How to raise a wooden floor to same height as adjoining concrete floor before carpetting?

I have a room which has a concrete subfloor on one side, and wooden floor boards on the other. Unfortunately the wooden floorboards are about 1.5cm lower then the concrete. What's the best way to ...
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1answer
131 views

How to level concrete floor that is chipped and has left over thinset

I removed some tile from a 10' by 15' section of my basement floor. As I was removing the tile, much of the concrete chipped away leaving low areas. Other areas have thin set remaining in the shape ...
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3answers
633 views

How to connect wood to concrete

How can I attach wood to concrete in this bench?
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1answer
212 views

I did a bad job pouring a cement walkway, how can I fix it?

I poured three 4'x4' slabs to make a walkway beside my house. The first two look alright but the third one is a half inch lower than the one next to it and slopes up at the open end where I want to ...
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2answers
684 views

how to repair large, uneven crack in concrete floor

I have a really long (about 20') uneven crack in my cement garage floor. Not only is it jagged, but the sides of the crack range from flat to about 1/2" high. I want to level the sides of the crack, ...
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1answer
166 views

How can I smooth an uneven concrete floor?

I have had a extension built at the back of my house. It is almost complete now. I had a 6 ft. 6 in. patio door at the back of the house, and the builders left it till last to remove. This will leave ...
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3answers
278 views

How should I remove a raised concrete pad on my basement floor?

I have a raised square of concrete, about 42" by 42" by 6" in my basement. Its probably an "equipment pad" of some sort, not sure what it was originally for, but it is inconveniently placed. Its ...
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0answers
81 views

How can I edge concrete without an edge trowel?

How can I make a concrete floor (also using dry shake color hardener) with a proper edge, without using an edge trowel? In Brazil I cannot find an edge trowel anywhere, so I would like to know if ...
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96 views

How do I fix badly peeling and hairline fractures on indoor concrete walls?

How do I paint and fix peeling paint and hairline fractures on my indoor concrete (cinder block) walls? The popcorn ceiling is a mess too.
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3answers
1k views

Basement subfloor, how exactly should I do it?

I am finishing a basement with my father and want to put in a subfloor. I know if there was ever enough water I would probably have to replace the floor anyways but want to give myself a couple inches ...
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2answers
830 views

Which is better/safer for cutting concrete slab, hammer drill or angle grinder?

I have to cut a 100x500 mm hole in a concrete slab that is about 80-100 mm thick. I think that I have two options to do that: 1) 9" angle grinder with segmented diamond disc: cut the long sides, then ...
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2answers
98 views

How to remove flaking concrete sealer/paint

After my basement flooded and I removed the carpet I found the previous owner had sealed the floor but it's flaking up now and I want to remove it all. It's about 200 sqft so a wire brush by hand is ...